Ultra-wideband electromagnetic wave absorption in mmWave using dual-loss engineered M-type hexaferrite: A wave cancellation approach
The development of broadband, high-performance electromagnetic (EM) wave absorbers in the millimeter-wave (mmWave) band requires optimizing both magnetic and dielectric losses, presenting significant challenges. Here, we report an ultra-wideband EM wave absorber for the mmWave band based on Strontiu...
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Elsevier
2025-07-01
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| Series: | Materials & Design |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127525006409 |
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| author | Jae Ryung Choi Seong Jun Cheon Hee Jung Lee Sang-bok Lee Byeongjin Park Horim Lee |
| author_facet | Jae Ryung Choi Seong Jun Cheon Hee Jung Lee Sang-bok Lee Byeongjin Park Horim Lee |
| author_sort | Jae Ryung Choi |
| collection | DOAJ |
| description | The development of broadband, high-performance electromagnetic (EM) wave absorbers in the millimeter-wave (mmWave) band requires optimizing both magnetic and dielectric losses, presenting significant challenges. Here, we report an ultra-wideband EM wave absorber for the mmWave band based on Strontium M-type ferrite (SrM) with dual-loss characteristics. SrM was synthesized via a non-stoichiometric sol–gel method with controlled iron (Fe) deficiencies to induce both dielectric and magnetic losses. The high magnetic anisotropy of SrM results in strong magnetic losses through ferromagnetic resonance (FMR) near 50 GHz, while Fe deficiencies induce local charge imbalances, leading to significant dielectric losses. EM wave characterization reveals that the dual-loss SrM absorber with an Fe/Sr ratio of 10 (SF10) exhibits an effective absorption bandwidth (EAB) of 26.95 GHz, covering the Q- and V-bands at a thickness of 0.5 mm. To elucidate the ultra-wideband absorption mechanism of the SF10 absorber, its EM parameters were analyzed using wave cancellation theory. The results demonstrate that the dual-loss characteristics reduce the amplitude difference between surface- and backplate-reflected waves and bring the phase difference close to π, enabling ultra-wide EAB through wave cancellation. These findings establish fundamental design principles for broadband EM wave absorbers. |
| format | Article |
| id | doaj-art-2b5b5449ed3943098a337e280625dc6b |
| institution | OA Journals |
| issn | 0264-1275 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj-art-2b5b5449ed3943098a337e280625dc6b2025-08-20T02:37:09ZengElsevierMaterials & Design0264-12752025-07-0125511422010.1016/j.matdes.2025.114220Ultra-wideband electromagnetic wave absorption in mmWave using dual-loss engineered M-type hexaferrite: A wave cancellation approachJae Ryung Choi0Seong Jun Cheon1Hee Jung Lee2Sang-bok Lee3Byeongjin Park4Horim Lee5Composites & Convergence Materials Research Division, Korea Institute of Materials Science, 797 Changwondaero, Seongsan-gu, Changwon, Gyeongsangnam-do 51508, Republic of KoreaComposites & Convergence Materials Research Division, Korea Institute of Materials Science, 797 Changwondaero, Seongsan-gu, Changwon, Gyeongsangnam-do 51508, Republic of KoreaComposites & Convergence Materials Research Division, Korea Institute of Materials Science, 797 Changwondaero, Seongsan-gu, Changwon, Gyeongsangnam-do 51508, Republic of KoreaComposites & Convergence Materials Research Division, Korea Institute of Materials Science, 797 Changwondaero, Seongsan-gu, Changwon, Gyeongsangnam-do 51508, Republic of KoreaComposites & Convergence Materials Research Division, Korea Institute of Materials Science, 797 Changwondaero, Seongsan-gu, Changwon, Gyeongsangnam-do 51508, Republic of KoreaCorresponding author.; Composites & Convergence Materials Research Division, Korea Institute of Materials Science, 797 Changwondaero, Seongsan-gu, Changwon, Gyeongsangnam-do 51508, Republic of KoreaThe development of broadband, high-performance electromagnetic (EM) wave absorbers in the millimeter-wave (mmWave) band requires optimizing both magnetic and dielectric losses, presenting significant challenges. Here, we report an ultra-wideband EM wave absorber for the mmWave band based on Strontium M-type ferrite (SrM) with dual-loss characteristics. SrM was synthesized via a non-stoichiometric sol–gel method with controlled iron (Fe) deficiencies to induce both dielectric and magnetic losses. The high magnetic anisotropy of SrM results in strong magnetic losses through ferromagnetic resonance (FMR) near 50 GHz, while Fe deficiencies induce local charge imbalances, leading to significant dielectric losses. EM wave characterization reveals that the dual-loss SrM absorber with an Fe/Sr ratio of 10 (SF10) exhibits an effective absorption bandwidth (EAB) of 26.95 GHz, covering the Q- and V-bands at a thickness of 0.5 mm. To elucidate the ultra-wideband absorption mechanism of the SF10 absorber, its EM parameters were analyzed using wave cancellation theory. The results demonstrate that the dual-loss characteristics reduce the amplitude difference between surface- and backplate-reflected waves and bring the phase difference close to π, enabling ultra-wide EAB through wave cancellation. These findings establish fundamental design principles for broadband EM wave absorbers.http://www.sciencedirect.com/science/article/pii/S0264127525006409Ultra-Wideband EM absorberM-type ferriteDual-LossmmWaveWave cancellation |
| spellingShingle | Jae Ryung Choi Seong Jun Cheon Hee Jung Lee Sang-bok Lee Byeongjin Park Horim Lee Ultra-wideband electromagnetic wave absorption in mmWave using dual-loss engineered M-type hexaferrite: A wave cancellation approach Materials & Design Ultra-Wideband EM absorber M-type ferrite Dual-Loss mmWave Wave cancellation |
| title | Ultra-wideband electromagnetic wave absorption in mmWave using dual-loss engineered M-type hexaferrite: A wave cancellation approach |
| title_full | Ultra-wideband electromagnetic wave absorption in mmWave using dual-loss engineered M-type hexaferrite: A wave cancellation approach |
| title_fullStr | Ultra-wideband electromagnetic wave absorption in mmWave using dual-loss engineered M-type hexaferrite: A wave cancellation approach |
| title_full_unstemmed | Ultra-wideband electromagnetic wave absorption in mmWave using dual-loss engineered M-type hexaferrite: A wave cancellation approach |
| title_short | Ultra-wideband electromagnetic wave absorption in mmWave using dual-loss engineered M-type hexaferrite: A wave cancellation approach |
| title_sort | ultra wideband electromagnetic wave absorption in mmwave using dual loss engineered m type hexaferrite a wave cancellation approach |
| topic | Ultra-Wideband EM absorber M-type ferrite Dual-Loss mmWave Wave cancellation |
| url | http://www.sciencedirect.com/science/article/pii/S0264127525006409 |
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